<!DOCTYPE html>

<script src="../../../resources/testharness.js"></script>
<script src="../../../resources/testharnessreport.js"></script>

<!-- The linked stylesheet must not be in the same directory as this test file. -->
<!-- This is intended to test that relative URLs in stylesheets remain relative -->
<!-- to the stylesheet's directory rather than the page that uses it. -->
<link href="../resources/image-url-var.css" rel="stylesheet">

<div id="target"></div>

<script>
for (var property of ['background', 'background-image']) {
  for (var value of ['image-set', 'url']) {
    test(() => {
      target.classList.remove(...target.classList);
      assert_equals(target.classList.length, 0);
      var initial = getComputedStyle(target)[property];

      target.classList.add(property);
      target.classList.add(value);
      target.classList.add('var');
      var actual = getComputedStyle(target)[property];

      target.classList.remove('var');
      target.classList.add('inline');
      var expected = getComputedStyle(target)[property];
      assert_not_equals(expected, initial);

      assert_equals(actual, expected);
    }, property + ' should resolve ' + value + ' the same whether via var() or not.');
  }
}
</script>
